There’s something utterly magical about coming home to the aroma of slow-cooked lamb shanks wafting through your kitchen. This slow cooker recipe transforms a tough cut of meat into the most delicious lamb shanks you’ve ever tasted – fork-tender and swimming in a lovely, unctuous gravy.

If you’ve ever been intimidated by cooking lamb shanks, let me reassure you: this is hands-down the best thing about using your slow cooker (or crock pot). The long, gentle cooking process breaks down all that connective tissue, turning these beauties into pure, melt-in-your-mouth perfection.

Why you’ll love this lamb shank recipe

I’ve tried lamb shanks in a pressure cooker, an Instant Pot, and even a traditional casserole pot (Dutch oven). While each method has its merits, slow cooking wins every single time for flavour and texture. Here’s why this recipe delivers the best results:

Minimal effort, maximum flavour – Once everything’s in the slow cooker, you’re done

Make-ahead friendly – This actually tastes even better the next day

Foolproof and super easy – Almost impossible to overcook in a slow cooker

Ingredients you’ll need

For the lamb shanks:
– 4 lamb shanks (good quality, from your local butcher or supermarket)
– 1 tablespoon olive oil
– 1 large onion, roughly chopped
– 2 carrots, peeled and cut into chunks
– 3 celery sticks, chopped
– 6 garlic cloves, crushed
– 2 tablespoons sundried tomato paste (or tomato puree)
– 500ml lamb stock
– 250ml red wine (a Cabernet Sauvignon or Pinot Noir are perfect – nothing too expensive)
– 2 bay leaves
– 4 sprigs fresh thyme
– 2 sprigs fresh rosemary
– Salt and black pepper to season
– 2 teaspoons cornflour mixed with a little cold water to thicken the gravy\

No red wine? You can substitute with the same amount of extra stock plus 1 tablespoon of balsamic vinegar for that depth of flavour.

Choosing your lamb shanks

Look for lamb shanks with plenty of meat on them – your butcher can help you select good ones. You’ll typically find them at the butcher counter or in vacuum-sealed packs at the supermarket. Each shank should weigh around 300-400g for the best results.

How to make slow cooker lamb shanks in gravy

Brown the lamb shanks: This step is crucial for developing a deeper flavour. Heat the olive oil in a large frying pan over medium-high heat. Season your lamb shanks generously with salt and pepper, then brown them on all sides until they’re beautifully caramelised. This should take about 8-10 minutes total. Then transfer the browned shanks to your slow cooker.

Build your braising liquid: In the same frying pan (don’t wash it – all that flavour!), sauté your onions, carrots, and celery for 5-6 minutes until they’re starting to soften. Add the garlic and tomato paste, cooking for another minute until fragrant. Pour in your red wine, scraping up all those gorgeous brown bits from the bottom of the pan. Let it bubble for a couple of minutes, then add your lamb stock. Bring everything to a simmer.

Slow cook: Pour the braising liquid and vegetables over your lamb shanks in the slow cooker. Tuck in the bay leaves, fresh thyme sprigs, and rosemary. You want enough liquid to come about halfway up the shanks – add a bit more stock if needed, though you shouldn’t need a lot of liquid as the lamb will release moisture during cooking.

Cook on LOW for 7-8 hours or cook on HIGH for 4-5 hours: You’ll know they’re ready when the meat is fork-tender and practically falling off the bone. The internal temperature should reach at least 90°C, but honestly, when they’re this slow-cooked, they’ll be well past that point.

Create that rich gravy: Once your lamb shanks are cooked, carefully remove them from the slow cooker and set aside, keeping them warm. Strain the cooking liquid through a sieve, pressing down on the vegetables to extract all that flavour. You may also find that there is quite a lot of oil that has come from the lamb. Before thickening your gravy, skim the oil from the sauce. If you’d like your gravy thicker (which I do!), pour it into a saucepan and simmer until reduced, or whisk in your cornflour/cornstarch mixed with a little cold water and simmer until it reaches your desired consistency.

What to serve them with

These slow cooker lamb shanks are incredibly versatile. My favourite ways to serve them include roasted vegetables and couscous for a more Mediterranean-style dish. But my absolute go-to is to serve them with lashings of luscious gravy, creamy, buttery mashed potatoes, and steamed green vegetables, including tenderstem broccoli and peas. You could even add red cabbage or substitute the mash for celeriac or sweet potato mash, or even roast potatoes.

A dollop of mint sauce on the side is traditional, though I find the gravy is so rich and flavourful, it hardly needs it. My husband loves to add some Dijon mustard.

Top tips for perfect lamb shanks

Choose wisely: Look for lamb shanks with a good amount of meat on them. Your butcher will help you select the best ones.

Don’t rush the browning: Taking time to properly caramelise the meat in your frying pan makes all the difference to the final flavour.

Layer the flavours: Using both red wine and stock creates incredible depth. The wine doesn’t need to be expensive – save the good stuff for drinking!

Fresh herbs matter: While dried herbs will work in a pinch, fresh thyme and rosemary add a wonderful aromatic quality.

Be patient: A long time in the slow cooker is what transforms tough meat into that sublime, bone-tender texture.

Skim the fat: Before thickening your gravy, skim off excess oil from the surface for a lighter, more refined sauce.

Can I make this in a casserole dish instead?

Absolutely! If you don’t have a slow cooker, you can make this in a heavy casserole dish or Dutch oven. Brown your shanks and vegetables as described, add your braising liquid, then cover tightly and cook in a 160°C oven for about 3-4 hours until fork tender. You may find you need to add more water if the liquid evaporates.

Can I swap lamb for other meats?

This method works brilliantly with other tough cuts of meat too – think beef shin, oxtail, or even a leg of lamb (bone-in). The slow cooking process is perfect for breaking down tough cuts into something spectacular.

Can I skip the browning of the lamb?

While you get a superior flavour if you brown the lamb shanks and vegetables before adding them to the slow cooker pot, I realise that those short on time may want to miss this step. I get it – so, you can definitely chuck all the ingredients into the pot, without browning either the meat or the vegetables. You’ll still get delicious lamb shanks with a tasty gravy, but it won’t have that rich colour or depth of flavour.

Storage and reheating

These lamb shanks taste even better the next day, once all the flavours have had time to meld together. Store them in an airtight container in the fridge for up to 3 days, or freeze for up to 3 months. To reheat, simply warm gently in a saucepan with the gravy, or pop back in your slow cooker on LOW for an hour or so.

Other tips

Can I cook these for longer? Yes, lamb shanks are very forgiving. You can cook on LOW for up to 10 hours if needed – they’ll just become even more tender. However, the bone might pop off!

Why is my gravy too thin? Make a cornflour slurry (2-3 teaspoons cornflour mixed with equal cold water) and whisk it into the simmering gravy. It will thicken within minutes.

Can I use a different cut of lamb? Yes! Try lamb shoulder (diced), lamb neck, or even a whole leg of lamb. Adjust cooking times accordingly.

Do I need to use wine? No, but it adds wonderful depth. Substitute with extra stock plus a tablespoon of balsamic vinegar if you prefer.

This slow cooker lamb shank recipe has become one of my most-requested dishes, and for good reason. It’s the kind of meal that makes you look like a culinary genius while requiring minimal hands-on time. The meat becomes so incredibly tender, the gravy so rich and flavourful – it’s comfort food at its absolute finest. Whether you’re cooking for a special Sunday dinner or want to treat yourself to something spectacular midweek, these slow cooker lamb shanks in gravy deliver restaurant-quality results every single time.